| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have been [v-ing] | 280 |
|
| 2 | must have be going | 12 |
|
| 3 | must have be thinking | 11 |
|
| 4 | must have be doing | 10 |
|
| 5 | must have be working | 8 |
|
| 6 | must have be watching | 7 |
|
| 7 | must have be waiting | 7 |
|
| 8 | must have be dreaming | 6 |
|
| 9 | must have be looking | 6 |
|
| 10 | must have be trying | 5 |
|
| 11 | must have be taking | 5 |
|
| 12 | must have be expecting | 5 |
|
